# Module Time_internal.Helpers

    module Helpers: sig .. end

    val char_of_digit : int -> Core_kernel.Std.Char.t

    val invalid_range : digits:int -> max:int -> i:int -> 'a

    val blit_string_of_int_4_digits : Core_kernel.Std.String.t -> pos:int -> int -> unit

    val blit_string_of_int_2_digits : Core_kernel.Std.String.t -> pos:int -> int -> unit

    val blit_string_of_int_3_digits : Core_kernel.Std.String.t -> pos:int -> int -> unit

    val parse_two_digits : Core_kernel.Std.String.t -> int -> int

    val parse_four_digits : Core_kernel.Std.String.t -> int -> int